Square.



No. www. Mmmm AUG. 15, 1905.v H. W. MGEL. SQUARE.

PI'LOATIOH FILED JUNE 1Q, 1904.

laila.. vll/gm 3mm/wom msnm n Gamm no.. Morauvuonnnmlms. msmnaroN. n. c.

HENRY WV. NAGFL, OF VICKSBURG, liIISSliEBSIFFI.

SQUAWNEZ..

Specification of Letters Patent.

Patented thug. 15, 1905.

Application filed June 10, 1904. Serial No. 212,005.

To all wiwi/1, rit 'n1/tty concern:

Beit known that l, HENRY W. NAGEL, a citizen of the United States, residing at Vicksburg. in the county of Warren, State of Mississippi, have invented certain new and useful lmprovemen ts in Squares; and li do hereby declare the following' to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap pertains to make and use the same.

This invention relates to bevels; and it has for its object to providea construction which may be adjusted for use as an ordinary square or as a bevel, a further object of the invention being to provide a construction which will be cheap, simple, and durable and may be quickly and accurately adjusted.

ln the drawings forming a portion of this specification, and in which like numerals of re ference indicate similar parts in the several views, Figure 1 is a top plan View of a square embodying' the present invention. Fig. 2 is a section on line 2 2 of Fig. 1. 3 is a section on line 3 3 of Fig. 1.

Referring now to the drawings, the presentV tool comprises a central plate 5, which forms what may be termed the stem of the square and which is provided with a longitudinal slot (i, extending throughouta portion of its length and for a purpose to be presently explained. The plate 5 is tapered at one end and to this tapered end portion against opposite faces thereof are pivoted arms 7 and 8, which are T-shaped in cross-section, as illustrated, the stems of the arms being disposed against the plate 5, while the head flanges are at right angles to the upper and lower faces of the plate. rlhehead `(langes of the arms terminate short ofthe pivoted ends of the arms, so that said arms may be folded close against the side edges of the plate 5.

Upon the plate 5 is slidablymounted a sleeve 9, having spaced ears 10 at each side thereof and between which at each side of the plate is pivoted a link 11 and l2, respectively, said links being pivoted at their outer ends against the stems of the arms 7 and 8, respectively, so that as the sleeve 9 is reciprocated upon the plate 5 the arms 7 and 8 are swung toward and away from said plate, so that they will lie at various angles to cach other. 'lhe upper and lower sides of the sleeve 9 are of suilicient resiliency to permit themto be drawn toward each other against the plate 5 to hold the sleeve against movementon the plate. To thus clamp the sleeve to the plate 5, a thu nib-screw 15 is engaged loosely through the upper side of the sleeve and is screwed into the lower side of the sleeve, so that by adjusting the screw in one direction the sides of the sleeve will be brought together and by adjusting it in the opposite direction the sides of the sleeve will be released.

It will be noted that with the construction presented there is produced a tool which has great rigidity and durability.

The plate 5 is marked on the upper face near the slot 6 with a scale from which the sleeve 9 travels, the sleeve with the scale indicating the angle at which the arms 7 and 8 lie. lit will be noted that the scale comprises four long markings, 20, 21, 22, and 23, which indicate, respectively, where to set the sleeve in order that the arms may lie at an angle corresponding to two sides of a square, a pentagon, a' hexagon, and an octagon, respectively. The member 5 always bisccts the angle between the arms. The long marks referred to are at one side of the slot. Between the long marks referred to are shorter marks 25, which in connection with the long marks form a pitch-scale and show the pitch of the bevel that is, they indicate the rise in inches to the foot. lt will ofcourse be understood that one scale may be on one side of the plate and the other scale on the other side.

It will be of course understood'that when the thumb-screw 15 is operated the sleeve will not only be compressed upon the plate 5 but also upon the links A11 and 12, so that all parts will be held securely against movement with respect to each other.

What is claimed is- A square consisting of a plate 5 having a longitudinal slot therein and scales at opposite sides of the slot, a com prcssible sleeve 9 slidu ably mounted upon the slotted plate, said sleeve including spaced ears, links 11 and 12 pivoted between the ears at opposite sides of the plate, cross-sectional T-shaped arms 7 and 8 pivotecl to one end of the slotted plete and In testimony whereof I affix my signature in pivoted to the links respectively, and a thumbpresence of two Witnesses.

Screw passed loosely through one side of the sleeve and through the slotted plete and screwed into the opposite plate and adapted to Witnesses: compress the sleeve against the slotted plate JOHN C. WILLIAMS, and the links. JULIUS T. HAVIS.

HENRY W. NAGEL. 

